What is the biggest current disadvantage to using gas hydrates as a form of energy?

What is the angular momentum of the bar about the axle?

The dot diagram represents the motion of the motorcycle as it moves from left to right

Which statement is true about an object that is moving in a circular motion due to centripetal force, f, when the radius of its circular motion is doubled? the new force then becomes equal to 2f the new force then becomes equal to f the new force then becomes equal to f/2 the new force then becomes equal to f2 the new force then becomes equal to 1/f